Question:
If someone accidentally ate non-kosher food, is it sufficient to simply brush their teeth before using utensils in their home?
Answer:
Yes. There is an old joke people say about a persn that wanted to know how to kasher his muth for Pesach he told him to fill his mouth with water, and then sit on the stove, nd whn the water boils, he knows it's kashered!
Best wishes
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